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Prepare images · Supporting

WCAG color contrast checker

Calculate a text/background color contrast ratio and check WCAG AA and AAA thresholds.

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What to know about this tool

Opaque sRGB hex color pairs only, not page accessibility certification. Large text means at least 18 pt regular (24 px), or 14 pt bold (about 18.67 px). Also inspect focus, interaction states and the final background.

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Hex, RGB, and HSL converterExperimental helperConvert a hex color into its HEX, RGB, and HSL representations.Compress imagesReduce JPEG, PNG or WebP file size with manual quality or a measured size target, then compare the original and exported image.Resize imagesSet pixels or a percentage, keep proportions, or choose fit, padding and center crop before exporting images.